Car-underframe construction.



F. L. IRWIN. GAR UNDERFRAME CONSTRUCTION. APPLICATION FILED FEB. 21,190s.

900,546.` Patented oct. 6, 1908.

3 SHEETS-SHEET 1.

WJTNESSES.- i jm VENTO/e.

@Q3/W I F. L. IRWIN.-

GAR UNDERFRAME CONSTRUCTION.

APPLIOATION FILED rpg. 21, 19oa.-

Patented Oct. 6,1908.

3 SHEETS-SHEET 2.

1N VEA/TOR.

Han/ ./rwin.

` P. L, IRWIN. GAR UNDERPRAME CONSTRUCTION. l Y

APPLIUA'TION FILED FEB. 21x 1908.

.900546` Patented oct. 6, 1908,.

3 SHEETS-SHEET 3.-

INI/ ENYOR Fran/f /rW/n UNiTnD STATES' PATENT oni-iron i FRANK L. IRWIN,OF COLUMBUS, OHIO, ASSIGNOR TO THE RALSTON 'STEELICAR COMPANY,

OF COLUMBUS, OHIO, A CORPORATION OF OHIO.

Cir

CAR-UNDERFRAME CONSTRUCTION.

' Specification of Letters atent;

Patented Oct. 6, 1908.

Application filed February 21, 1908. Serial No. 417,193.

ful Improvements in Car-Underframe Con-' structions, of which thelfollowing is a specification.

My invention relates to improvements in f underfranie constructions forcars, especially relating to. steel or metallic cars, and contemplatesimproved features at the ybolster and at the cross bearer; especiallyanimp roved and greatly strengthened construction of the diaphragmlates, the formation of the seat for the side si l thereon, and the con#struction of the truss extendingv from the seat upon one .side,underneaththe center sill to the opposite side.

` It further comprises the foregoing features v.and other features ofconstruction and their .combinations hereinafter set forth. r v iReferring to the drawings which are hereto attached and hereby made apart of this specification, Figure lis a plan view of one-half of anunderframe construction .having my improvements thereon; Fig. 2 is aside view ofl the underframe construction shown in Fig. 1 ;l Fig. 3 is atransverse section at cross bearer; Fig; 4 is a transverse section atbolster; Fig. 5 showsthe development of a diaphragm plate shown in Fig.3; Fig., 6, is perspective of-a portion of the construction at bolsterand Fig:7 is a portion of the construction at the cross bearer; Fig. 8is a view of my improved construction of spreader for the center sill atcross bearer. In the drawings in which the same numeral indicates thesame part throughout, 1 is t e center sill construction-havingthebolster 2 thereon and the cross bearer 3, and the stringers 4, andthe side sill 5 positioned thereon; the center sill as herein disclose-dvis formed of channels 6 and l7 having top through which Vflanges 15Acover plate 8 secured-to the upper flanges of the channels as shown at9 and 10; at each.

side of the center sill is a diaphragm plate 11,

12, having a flange portion 13 through which "bolts or rivets 14 extendto secure the same to the Icenter sill. The diaphragm plate lalso hasthe flange 15 at its lower side conforming to the lower flange 16 on'thecentery sil,

and y16 is the rivet 17 to secure thesjaid flanges firmly together;

on its ripper side the diaphragm 1 his also procross cover at 29 to thescribed for diaphragm plate 11.

v'three ,edges shown. at

the upper face of the diaphragm plate is a secured tot e flange portion18 by means of the rivets shown at 20.v The vcenter sill members arepierced as appears distinctly in Fig.

7 at 21 and 22, to permit the insertion therethrough of the cover plate19, which cover plate at its opposite end is secured to the upperflange' ontli'e diaphragm 12' by. the rivets 23. Adjacent its dater enddiaphragm 11 is cut away as appears at 24, leaving an unfl'anged end25provided with rivet holesv vided with a flange 18 and positioned upon1plate 19, said cover plate being 26; and it is further noted that thelower side .of the diaphragm plate 11 is uuflanged, but is provided withrivet holes 27. Diaphragm plate 11* similar to 11\ is placed lagainstdiaphragm plate 11 and their upper flanges -18 and 18a' form the surfaceupon which cover plate 19 is' ositioned;-in other words the dia hragin pates are provided in pairs placed bac to back, as will more'cleailyappear in.

Fig. 7.

In the recess `24 of the diaphragm plates there is positioned a Z-plate28 firm y riveted phragm plate 11, and a seat is thus formed forthe sidesill 30. To strengthen this seat and also to strengthen the tion of thecross bearer, `the bent angle 31l flange-portion 18 of the dia-` generalconstruc-v is provided, firmly riveted to the diaphragm 4' plate throughopenings 26 and 27; a simi ar angle 31a is provided and placed side by"side With 31, and between these two angles are inclosed -the unangedportions of the the rivets insertedv through Athe holes 26 and 27passing y lates 11 and 11a and es 31 and 31?, thereby plates '11 and 11,

also 'through both 'diaphragm throu h both `ang provi ing theconstruction which is-of four thicknesses and lsecurely the seat for theside sill, and furthermore the seat is of a double thickness com osed ofthe Z late 28 and the flange 32 on t e angle 31. Ho esy 28?' formedlthrough the Z- late are adapted to receivebolts inserted t irough aside'sill, lto secure said sill firmly to said seat.-

v'The construction on the-op osite' side ofthe center sill is identicalwit that just de- At 'the bolster shown in Fig. phragm plate 33'isformed with flanges on s4, 35 and 36,. the flange 34 being.secured-'t0Vthe cover -plate riveted. `This con. struction is also of fourthicknesses adjacent.

rso

4, the dia- 37, the flange 35 being secured through the )center sillchannel 38 and the flange 36 having secured thereto the truss plate 39eX- tending beneath the center sill and to quite 5 a distance on eitherside thereof upwardly along the diaphragm plates. At the bolster it isnot practicable to provide the angle shown at 31 from the side sill atone end to the side sill at the other end, and therefore tostrengthen'the seat for the side sill, the short portion 40 of an angleis secured by rivets through the diaphragm plates beneath theZ-plate-seat for the side sill, the inner end 41 of the angle 40abutting against the outer end of the flange 36,v thereby forming abracing construction for the support of th seat for the side sill.

Referring to Fig. 6, it will be seen that at the bolster, two diaphragmplates 33 and 33a are provided, placed back to -back-and similarlysecured to the channel of the center sill by the rivets shown at 42; thecover plate 37 placed thereon is secured to the flanges of both of s'aiddiaphragm plates and is inserted through the slits 43 and 44 formed inchannels of the center sill; thev bottom truss plate 39 is firmlysecured to the lower flanges 45 and 46 of the center sill channels bymeans of rivets shown at 47.

proved construction of spreader member' 48 aving the flanges 49 and 50thereon and the extension 51 which is vreceived between the angles orImembers 31 and 31 the flangel portions are rovided `with bolt `or rivetholes 52 theretliirough and the Orivets which secure the diaphragmplates noted above to the outer faces of the center sill also secure thespreader member to the inner faces of the center sill the dependingportion 51 of the spreader member is positioned between tlie anglemembers 31 and 31il and is securely fastened between said angle mem- Ialso provide at the cross bearer an im-` bers by the bolts or rivetsshown. In this manner-I greatly strengthen-the construetion of thecenter sill-and provide a strong bracing construction at the crossbearer. lIn this manner, at the bolster, il also rovide a doublediaphragm at each side of t e center to cover plate through the centersill channe s and secure the same to the diaphragm upon the o positesides of the center sill and secure sai diaphragms on their lower edgesto abottom truss late extending `from adjacent the outer eng of thediaphragm plates on one side of the center sill to a oint ad-V jacentthe outer ends `of the diaphragm i plates onthe opposite vside ofthelcenter sill', thereby binding the diaphragm lates on the oppositesides of the vcenter sil both above and below, as well assecuring-thesame firmly through the ,center sil the seat formed at theouter end of the diaphragm 4 et plates for the side sill is also ofvvery strong sill, rivet the` same to the center sill, pass a`construction; the seat for the sidesill is geiierally made weak, but theconstruction herein shown provides a broad, firm seat for the sill,provides means for securing the sill to its seat, and provides means forreinforcing the seat.

lVhat I claim is:

1. ln a metallic underframe construction for cars, a center sill formedof channels, a diaphragm plate positioned on each side of said centersill, a flange provided onthe inner edge of said diaphragm plate throughwhich the saine is secured to a center sill. channel, a flange providedon the upper edge of said diaphragm, a coverl plate secured to saidflange and adapted to be inserted through slits in said center sill, aflange formed on the lower edge of said diaphragm plate, a truss memberpositioned beneath said diaphragm plate and secured thereto through saidlast'nientioned flange, said diaphragm platehaving a recess formedtherein adjacent its outer end, and a Z-plate positioned in said recessand secured to the upper flange of said diaphragm plate to form va seatfor the side sill, said truss member heilig also intended to forni areinforcement for said side sill seat. i

2.' 'In a metallic underframe for ears a ecnter sill, a pair ofdiaphragm each side of said center sil and flanged at their inner edgesand secured to said center sill through said flanges, Vlateral flangesformed on the upper edges of said diaphragm plates, a cover platemounted upon said diahragin plates and secured thereto and passingthrough said center sill and being secured to the oppositel disposed)air of diaphragm plates, a plura ity of angle truss members embracingthe lower edges of the diaphragm lates on one side of the center sill,and being secured thereto, and'extending beneath said center sill, andembracing the lower edges of the diaphragm lates on the opposite side ofsaid center si and being secured thereto, whereby said oppositely'disposed pairs of diaphragmplates are firmly bound together in operativeposition both on their upper faces and on their lower faces.

3. In a metallic underframe for cars a ceiiter sill, a pair of diaphragmy lates located on each side of said center sil and flanged at theirinner edges and secured to said. center sill through f said flanges,lateral flanges formed on the upper edges of said diaphragm plates, acover plate mounted upon saidv diahragm plates and secured thereto andpassing through said center' sill and being secured to the oppositeldisposed air of diaphragm plates, aplura ity of ange truss membersembracing the lower edges of the diaphragm lates on one side ofthecenter sill, and being secured thereto, and extending beneath saidcenter sill, and embracing the lower edges of the diaphragm plates onthe oppoplates located on site side of said center sill and beingsecured thereto, whereby said oppositely disposed pairs of diaphragmplates are 4firmly bound .together both on their upper faces-and on.their lower faces, said diaphragm plates attheir outer ends having a,recess formed therein, a plate to conform to said recess'being securedto the u per flanges of said diaphragm plates and orming a seat for aside sill, said seat being reinforced by said angle truss members. p

4. In a ear bolster, a dia hragm late hav# ing an inner flange, where ysaidv p ate is se-V cured to the center sill, a flange onthe lowerl edgeof said plate terminated near the outer end thereof, said plate yhavinga recess formed in its upper edge at its outer end, an

. angle member secured to said plate to form a continuation of saidlower flange and `to abut against the same at its inner end andl havingits upper face adapted to' supplement the edge of said plate in saidrecessv to form a seat for a side sill. y

5. In a car bolster, a diaphragm plate re cessed at its outer end, aseat member formedl to fit the walls of said recess and overlappi'n thetop of said plate, means to secure sai overlapping part to 'said plate,a flange'on.A

the lower edge of said plate eut away near its outer end, an angleabutting against the outer end of said flange secured to said plate andadapted to form a support f or said seat member. v,

6. In a ear bolster or cross bearer, ia diaphragm plate having its outerend recessed,

a seat member formed to fit the walls of said recess and to overla theupper face of said diaphragm, means for securing said overlapping partto said diaphragm, and an angle positioned beneath saidseat member, andsecured to said diaphragm plate.

7, In a metalliccar underframe construe-'- tio'n, a center sill formedof spaced apart members, a spreader member positioned between saidcenter sill members and secured thereto, a cross bearer mounted on saidcent'ersill, a plurality of truss members spaced Aapart and extendingfrom vone'end ofv said cross bearer beneath said center sill to thevother end of said ycross bearer, said spreader member having adependingl portieri positioned.,v between said truss members and meansfor securing said truss. members and said depending ortion'firmlytogether.

9. lIn a metalic car -underframe construction a center sill formedof,spaced apart members, 'oppositely disposed dia hragm lates mountedupon said center si memers, a spreader member interposed between Y. saidcenter sill members, and means inserted. through said center slllmembers for securlng said spreader member and diaphragm plates thereto',truss members Vpositioned against'4 the under fa'ee'of said center silland engaging said diaphragm plates at their outer i ends, and anextended portion on said spreader-member adapted to be positionedbetween said truss members and securely united thereto.

In testimony whereof I affix my signature in the presence of twowitnesses.

FRANK L. IRWIN.

Witnesses:

HORACE S. Kenn, A. RAGER.

